643 FNUS55 KBOI 201428 FWFBOI Fire Weather Planning Forecast for SW Idaho and SE Oregon National Weather Service Boise ID 828 AM MDT Thu Jul 20 2023 ...HOT AND MOSTLY DRY THROUGH EARLY NEXT WEEK... ...ISOLATED AFTERNOON THUNDERSTORMS IN SOUTH CENTRAL IDAHO TODAY... .DISCUSSION... Lingering moisture in southern Idaho will bring isolated thunderstorms to the ID-NV border near the Magic Valley and the Central Idaho mountains this afternoon. Gusty outflow winds up to 40-50 mph are possible again with stronger storms. Hot temperatures, diurnal winds, and mostly dry conditions with poor overnight relative humidity recoveries are anticipated through early next week. Breezy westerly winds are likely Saturday and Sunday afternoon. Areas of monsoon moisture moving into the region this weekend will continue the slight chance for afternoon thunderstorms, however confidence remains low with timing and location. IDZ401-402-202230- Western Payette National Forest-Eastern Payette National Forest- 828 AM MDT Thu Jul 20 2023 .TODAY... Sky/weather.........Partly cloudy. Isolated showers and thunderstorms in the afternoon. Thunderstorms may produce gusty winds in the afternoon. Chance of precipitation 20 percent. Max temperature.....79 to 91. 24 hr trend......On average, 3 degrees warmer. Min humidity........13 to 20 percent. 24 hr trend......On average, unchanged. 20-foot winds....... Valleys/lwr slopes...Light upslope winds less than 8 mph in the morning, becoming west 8 to 9 mph in the afternoon. Ridges/upr slopes....Light winds less than 8 mph in the morning, becoming west 8 to 10 mph in the afternoon. Haines Index........5 moderate. LAL.................1 in the morning, increasing to 2 in the afternoon. CWR /0.10 inch/.....10 percent. Smoke Dispersal: Mixing Height......12000-13000 ft AGL. Transport Winds....Southwest 10 to 15 mph. .TONIGHT... Sky/weather.........Mostly clear. Min temperature.....54 to 66. 24 hr trend......On average, 5 degrees warmer. Max humidity........36 to 46 percent. 24 hr trend......On average, unchanged. 20-foot winds....... Valleys/lwr slopes...Light downslope winds less than 8 mph. Ridges/upr slopes....Light winds less than 8 mph. Haines Index........5 moderate. LAL.................1. CWR /0.10 inch/.....0 percent. Smoke Dispersal: Mixing Height......200-300 ft AGL. Transport Winds....East 5 to 10 mph. .FRIDAY... Sky/weather.........Sunny. Max temperature.....79 to 94. 24 hr trend......On average, unchanged. Min humidity........12 to 20 percent. 24 hr trend......On average, unchanged. 20-foot winds....... Valleys/lwr slopes...Light upslope winds less than 8 mph in the morning, becoming southwest around 8 mph in the afternoon. Ridges/upr slopes....Light winds less than 8 mph in the morning, becoming west 8 to 9 mph with gusts to 16 mph in the afternoon. Haines Index........5 moderate. LAL.................1. CWR /0.10 inch/.....0 percent. Smoke Dispersal: Mixing Height......10500-12500 ft AGL. Transport Winds....Southwest 10 to 15 mph. $$ = IDZ403-202230- Northern Boise National Forest- 828 AM MDT Thu Jul 20 2023 .TODAY... Sky/weather.........Partly cloudy. Isolated showers and thunderstorms in the afternoon. Thunderstorms may produce gusty winds in the afternoon. Chance of precipitation 20 percent. Max temperature.....77 to 92. 24 hr trend......On average, 3 degrees warmer. Min humidity........13 to 19 percent. 24 hr trend......On average, unchanged. 20-foot winds....... Valleys/lwr slopes...Light upslope winds less than 8 mph in the morning, becoming southwest 8 to 10 mph in the afternoon. Ridges/upr slopes....Light winds less than 8 mph in the morning, becoming west 8 to 11 mph with gusts to 18 mph in the afternoon. Haines Index........5 moderate. LAL.................1 in the morning, increasing to 2 in the afternoon. CWR /0.10 inch/.....10 percent. Smoke Dispersal: Mixing Height......12500-13500 ft AGL. Transport Winds....Southwest 10 to 15 mph. .TONIGHT... Sky/weather.........Mostly clear. Min temperature.....53 to 63. 24 hr trend......On average, 4 degrees warmer. Max humidity........36 to 56 percent. 24 hr trend......On average, 2 percent wetter. 20-foot winds....... Valleys/lwr slopes...Light downslope winds less than 8 mph. Ridges/upr slopes....West around 8 mph with gusts to 16 mph in the evening, becoming light after midnight. Haines Index........5 moderate. LAL.................1. CWR /0.10 inch/.....0 percent. Smoke Dispersal: Mixing Height......200-300 ft AGL. Transport Winds....East around 5 mph. .FRIDAY... Sky/weather.........Sunny. Max temperature.....79 to 94. 24 hr trend......On average, unchanged. Min humidity........12 to 17 percent. 24 hr trend......On average, unchanged. 20-foot winds....... Valleys/lwr slopes...Light upslope winds less than 8 mph in the morning, becoming southwest around 8 mph in the afternoon. Ridges/upr slopes....Light winds less than 8 mph in the morning, becoming west 8 to 9 mph with gusts to 16 mph in the afternoon. Haines Index........6 high. LAL.................1. CWR /0.10 inch/.....0 percent. Smoke Dispersal: Mixing Height......11000-12500 ft AGL. Transport Winds....Southwest 10 to 15 mph. $$ = IDZ421-202230- Southern Boise National Forest/Western Sawtooth National Forest- 828 AM MDT Thu Jul 20 2023 .TODAY... Sky/weather.........Partly cloudy with isolated showers. Isolated thunderstorms. Thunderstorms may produce gusty winds in the afternoon. Chance of precipitation 20 percent. Max temperature.....84 to 97, except 75 to 83 above 6500 feet. 24 hr trend......On average, 2 degrees warmer. Min humidity........11 to 18 percent, except 16 to 21 percent above 6500 feet. 24 hr trend......On average, unchanged. 20-foot winds....... Valleys/lwr slopes...Light upslope winds less than 8 mph in the morning, becoming southwest 8 to 12 mph in the afternoon. Ridges/upr slopes....Light winds less than 8 mph in the morning, becoming southwest 8 to 11 mph in the afternoon. Haines Index........5 moderate. LAL.................2. CWR /0.10 inch/.....10 percent. Smoke Dispersal: Mixing Height......12000-13500 ft AGL. Transport Winds....Southwest 10 to 15 mph. .TONIGHT... Sky/weather.........Mostly clear. Min temperature.....54 to 66. 24 hr trend......On average, 3 degrees warmer. Max humidity........29 to 44 percent. 24 hr trend......On average, unchanged. 20-foot winds....... Valleys/lwr slopes...Light downslope winds less than 8 mph. Ridges/upr slopes....Light winds less than 8 mph. Haines Index........5 moderate. LAL.................1. CWR /0.10 inch/.....0 percent. Smoke Dispersal: Mixing Height......300-400 ft AGL. Transport Winds....Northeast 5 to 10 mph. .FRIDAY... Sky/weather.........Sunny. Max temperature.....85 to 98, except 77 to 84 above 6500 feet. 24 hr trend......On average, unchanged. Min humidity........10 to 17 percent. 24 hr trend......On average, 3 percent drier. 20-foot winds....... Valleys/lwr slopes...Light upslope winds less than 8 mph. Ridges/upr slopes....Light winds less than 8 mph in the morning, becoming southwest around 8 mph in the afternoon. Haines Index........6 high. LAL.................1. CWR /0.10 inch/.....0 percent. Smoke Dispersal: Mixing Height......11000-12000 ft AGL. Transport Winds....Southwest 10 to 15 mph. $$ = IDZ400-202230- Northern Boise BLM- 828 AM MDT Thu Jul 20 2023 .TODAY... Sky/weather.........Sunny. Max temperature.....92 to 103. 24 hr trend......On average, 3 degrees warmer. Min humidity........9 to 14 percent. 24 hr trend......On average, unchanged. 20-foot winds....... Valleys/lwr slopes...Northeast 8 to 9 mph in the morning, shifting to southwest in the afternoon. Ridges/upr slopes....Light winds less than 8 mph in the morning, becoming southwest 8 to 10 mph in the afternoon. Haines Index........5 moderate. LAL.................1. CWR /0.10 inch/.....0 percent. Smoke Dispersal: Mixing Height......11000-13000 ft AGL. Transport Winds....Southwest around 10 mph. .TONIGHT... Sky/weather.........Mostly clear. Min temperature.....65 to 71. 24 hr trend......On average, 5 degrees warmer. Max humidity........32 to 44 percent. 24 hr trend......On average, unchanged. 20-foot winds....... Valleys/lwr slopes...Light downslope winds less than 8 mph in the evening, becoming northeast 8 to 10 mph after midnight. Ridges/upr slopes....Light winds less than 8 mph in the evening, becoming northeast 8 to 10 mph after midnight. Haines Index........5 moderate. LAL.................1. CWR /0.10 inch/.....0 percent. Smoke Dispersal: Mixing Height......300 ft AGL. Transport Winds....Northeast 5 to 15 mph. .FRIDAY... Sky/weather.........Sunny. Max temperature.....93 to 104. 24 hr trend......On average, unchanged. Min humidity........8 to 13 percent. 24 hr trend......On average, unchanged. 20-foot winds....... Valleys/lwr slopes...Northeast around 8 mph in the morning, becoming light upslope less than 8 mph in the afternoon. Ridges/upr slopes....Light winds less than 8 mph in the morning, becoming southwest around 8 mph in the afternoon. Haines Index........6 high. LAL.................1. CWR /0.10 inch/.....0 percent. Smoke Dispersal: Mixing Height......10500-11500 ft AGL. Transport Winds....Southwest 10 to 15 mph. $$ = IDZ420-424-202230- Treasure Valley BLM-Western Twin Falls BLM- 828 AM MDT Thu Jul 20 2023 .TODAY... Sky/weather.........Sunny. Max temperature.....96 to 104. 24 hr trend......On average, 4 degrees warmer. Min humidity........9 to 15 percent. 24 hr trend......On average, unchanged. 20-foot winds....... Valleys/lwr slopes...East 8 to 9 mph in the morning, shifting to west 10 to 15 mph in the afternoon. Ridges/upr slopes....Light winds less than 8 mph in the morning, becoming southwest 8 to 11 mph in the afternoon. Haines Index........5 moderate. LAL.................1. CWR /0.10 inch/.....0 percent. Smoke Dispersal: Mixing Height......12000-14000 ft AGL. Transport Winds....West 10 to 20 mph. .TONIGHT... Sky/weather.........Mostly clear. Min temperature.....63 to 69. 24 hr trend......On average, 4 degrees warmer. Max humidity........32 to 47 percent. 24 hr trend......On average, 4 percent drier. 20-foot winds....... Valleys/lwr slopes...Northeast around 8 mph. Gusts to 16 mph in the evening. Ridges/upr slopes....Light winds less than 8 mph in the evening, becoming northeast around 8 mph after midnight. Haines Index........5 moderate. LAL.................1. CWR /0.10 inch/.....0 percent. Smoke Dispersal: Mixing Height......300 ft AGL. Transport Winds....Northeast 10 to 20 mph. .FRIDAY... Sky/weather.........Sunny. Max temperature.....98 to 104. 24 hr trend......On average, unchanged. Min humidity........7 to 13 percent. 24 hr trend......On average, unchanged. 20-foot winds....... Valleys/lwr slopes...East around 8 mph in the morning, becoming light upslope less than 8 mph in the afternoon. Ridges/upr slopes....Northeast around 8 mph in the morning, shifting to southwest in the afternoon. Haines Index........6 high. LAL.................1. CWR /0.10 inch/.....0 percent. Smoke Dispersal: Mixing Height......11000-13000 ft AGL. Transport Winds....West 10 to 15 mph. $$ = IDZ423-426-202230- Owyhee Mountains-Southern Highlands- 828 AM MDT Thu Jul 20 2023 .TODAY... Sky/weather.........Partly cloudy. Isolated showers and thunderstorms in the afternoon. Thunderstorms may produce gusty winds in the afternoon. Chance of precipitation 20 percent. Max temperature.....90 to 101. 24 hr trend......On average, 5 degrees warmer. Min humidity........8 to 14 percent. 24 hr trend......On average, 2 percent drier. 20-foot winds....... Valleys/lwr slopes...South 8 to 9 mph in the morning, shifting to northwest 8 to 13 mph in the afternoon. Ridges/upr slopes....Southwest 8 to 12 mph. Haines Index........5 moderate. LAL.................1 in the morning, increasing to 2 in the afternoon. CWR /0.10 inch/.....10 percent. Smoke Dispersal: Mixing Height......12500-14500 ft AGL. Transport Winds....West 10 to 15 mph. .TONIGHT... Sky/weather.........Mostly clear. Min temperature.....59 to 69. 24 hr trend......On average, 2 degrees warmer. Max humidity........28 to 38 percent. 24 hr trend......On average, 8 percent drier. 20-foot winds....... Valleys/lwr slopes...West around 10 mph with gusts to 18 mph. Ridges/upr slopes....West 8 to 10 mph with gusts to 18 mph in the evening, becoming light after midnight. Haines Index........5 moderate. LAL.................1. CWR /0.10 inch/.....0 percent. Smoke Dispersal: Mixing Height......300 ft AGL. Transport Winds....Southwest 10 to 20 mph. .FRIDAY... Sky/weather.........Sunny. Max temperature.....92 to 102. 24 hr trend......On average, unchanged. Min humidity........6 to 13 percent. 24 hr trend......On average, 2 percent drier. 20-foot winds....... Valleys/lwr slopes...Light upslope winds less than 8 mph in the morning, becoming north around 8 mph in the afternoon. Ridges/upr slopes....Light winds less than 8 mph in the morning, becoming west around 8 mph in the afternoon. Haines Index........6 high. LAL.................1. CWR /0.10 inch/.....0 percent. Smoke Dispersal: Mixing Height......11500-13500 ft AGL. Transport Winds....Southwest 10 to 15 mph. $$ = ORZ646-202230- Baker Valley- 728 AM PDT Thu Jul 20 2023 .TODAY... Sky/weather.........Sunny. Max temperature.....89 to 101. 24 hr trend......On average, 4 degrees warmer. Min humidity........10 to 15 percent. 24 hr trend......On average, unchanged. 20-foot winds....... Valleys/lwr slopes...Northwest 8 to 9 mph in the morning, shifting to southeast around 8 mph in the afternoon. Ridges/upr slopes....Light winds less than 8 mph in the morning, becoming southeast 8 to 9 mph in the afternoon. Haines Index........4 low. LAL.................1. CWR /0.10 inch/.....0 percent. .TONIGHT... Sky/weather.........Mostly clear. Min temperature.....58 to 68. 24 hr trend......On average, 4 degrees warmer. Max humidity........34 to 49 percent. 24 hr trend......On average, 3 percent drier. 20-foot winds....... Valleys/lwr slopes...Northwest 8 to 13 mph. Ridges/upr slopes....Northwest 8 to 13 mph. Haines Index........4 low. LAL.................1. CWR /0.10 inch/.....0 percent. .FRIDAY... Sky/weather.........Sunny. Max temperature.....90 to 102. 24 hr trend......On average, unchanged. Min humidity........10 to 16 percent. 24 hr trend......On average, unchanged. 20-foot winds....... Valleys/lwr slopes...Northwest 8 to 9 mph in the morning, becoming light upslope less than 8 mph in the afternoon. Ridges/upr slopes....Northwest around 8 mph in the morning, shifting to south in the afternoon. Haines Index........5 moderate. LAL.................1. CWR /0.10 inch/.....0 percent. $$ = ORZ636-637-202230- Burns BLM-Vale BLM- 828 AM MDT Thu Jul 20 2023 /728 AM PDT Thu Jul 20 2023/ .TODAY... Sky/weather.........Sunny. Max temperature.....89 to 101. 24 hr trend......On average, 2 degrees warmer. Min humidity........7 to 12 percent. 24 hr trend......On average, unchanged. 20-foot winds....... Valleys/lwr slopes...Light upslope winds less than 8 mph in the morning, becoming southwest 8 to 11 mph in the afternoon. Ridges/upr slopes....Southwest 8 to 14 mph. Haines Index........5 moderate. LAL.................1. CWR /0.10 inch/.....0 percent. .TONIGHT... Sky/weather.........Mostly clear. Min temperature.....57 to 68. 24 hr trend......On average, 2 degrees warmer. Max humidity........25 to 35 percent. 24 hr trend......On average, 3 percent drier. 20-foot winds....... Valleys/lwr slopes...Northwest around 10 mph. Ridges/upr slopes....Northwest around 10 mph. Haines Index........5 moderate. LAL.................1. CWR /0.10 inch/.....0 percent. .FRIDAY... Sky/weather.........Sunny. Max temperature.....91 to 102. 24 hr trend......On average, 2 degrees warmer. Min humidity........7 to 12 percent. 24 hr trend......On average, unchanged. 20-foot winds....... Valleys/lwr slopes...Light upslope winds less than 8 mph in the morning, becoming southwest around 8 mph in the afternoon. Ridges/upr slopes....Light winds less than 8 mph in the morning, becoming southwest 8 to 10 mph in the afternoon. Haines Index........6 high. LAL.................1. CWR /0.10 inch/.....0 percent. $$ = .FORECAST DAYS 3 THROUGH 7... .SATURDAY...Partly cloudy. Lows 57 to 68. Highs 88 to 103. Northwest winds 10 to 15 mph with gusts to 25 mph. .SUNDAY...Partly cloudy. Lows 56 to 68. Highs 85 to 100. Northwest winds 10 to 15 mph with gusts to 25 mph. .MONDAY...Partly cloudy. Lows 56 to 70. Highs 82 to 97. West winds 10 to 15 mph with gusts to 25 mph. .TUESDAY...Partly cloudy. Lows 52 to 65. Highs 78 to 93. .WEDNESDAY...Mostly clear. Lows 51 to 63. Highs 79 to 94. $$ =